Improvement in attachments for lamps



C. F. MARTINI ATTACHMENT FOR LAMP. N0.17Z,'137. Patented Jan. 11-, 18776.

' WITNESSES Q IJVVEJV'TOR MZW (Ma/Q 1 L5 Q .4 Lila/A By WWW m flttorneycollar, as seen.

holes, which are drilled horizontally through UNITED STATES CHARLES F.MARTINE, OF

BOSTON, MASSACHUSETTS.

I'MPR OVEMENT IN ATTACHMENTS FOR LAMPS.

Specification forming part of Letters Patent No. [72,137, dated January11, 1876 application filed September 11, 1875.

To all whom it may concern:

Be it known that 1', CHARLES F. MARTINE,

of Boston, Massachusetts, have invented certain new and usefulImprovements-in Attachments for Lamps; and do hereby declare that thefollowing is a full, clear, and exact description thereof, referencebeing bad to the accompanying drawings, and to the letters of referencemarked thereon, making a part of this specification.

The nature of my invention consists in the combination of apeculiarly-arranged lens adjustment for use with an ordinary coal-oillamp, as will be hereinafter set forth.

In the annexed drawings, which make a part of this specification, Figurel is a perspective View; Fig. 2, a side view of the lens, and Fig. 3 aperspective of the collar which connects the lens to the lamp.

In the figures, A represents an ordinary hand-lamp for burning coal-oil.B represents the metal band which surrounds the throat of the lamp.Around this band is placed a loose metallic collar, C, which is madefast at pleasure to said band by means of a set-screw, E. Secured tothis collar C are two lugs, D D, opposite to each other, on ,the upperside of said These lugs are provided with them. F represents a convexlens, made of suitable size, and of glass. This lens has its edgesurrounded with a metal band, and connected to this band are two curvedwire rods,

G G. The curve of these wires is circular, taking the center of theflame of the lamp as a radiating-point.

The rods G G are inserted in the holes 0 e in the lugs D I), and bymoving them to and fro in these holes the angle of the lens is adjustedwith reference to the flame of the lamp, so as to cast the light in adirect horizontal line, or in a line below that, according to therequirements of the user of the lamp.

1 may use a blue lens, or one of any other color, as I may see proper ordesirable.

I am aware that the simple combination of a water, or solid glass lens,has been used .before, and is not new; hence I disclaim saidcombination, broadly; but

What I do claim as new, and desire to secure by Letters Patent, is-- Thelens F, provided with a rim and curved legs or supports, whereby thelens may be raised or lowered upon the periphery of a circle, when usedin combination with a coal-oil lamp or gas-jet, the blaze of such lampor jet being the center of the circle, substantially as set forth.

In testimony that I claim the foregoing I 'have hereunto set my handthis 12th day of August, 1875.

CHARLES F. MARTINE.

Witnesses:

(J. L. EVERT, LUCIAN B.'THoMPs0N.

